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Title:
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Precise measurement of the e+e−→π+π−(γ) cross section with the initial state radiation method at BABAR
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Author:
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Graugés Pous, Eugeni; BABAR Collaboration
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Other authors:
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Universitat de Barcelona |
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Abstract:
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A precise measurement of the cross section of the process eþe ! þ ðÞ from threshold to an energy of 3 GeV is obtained with the initial state radiation (ISR) method using 232 fb 1 of data collected with the BABAR detector at eþe center-of-mass energies near 10.6 GeV. The ISR luminosity is determined from a study of the leptonic process eþe ! þ ðÞ. The leading-order hadronic contribution to the muon magnetic anomaly calculated using the cross section measured from threshold to 1.8 GeV is ð514:1 2:2ðstatÞ 3:1ðsystÞÞ 10 10. |
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Subject(s):
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-Partícules (Física nuclear)
-Mesons (Física nuclear)
-Particles (Nuclear physics)
-Mesons (Nuclear physics) |
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Rights:
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(c) American Physical Society, 2009
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Document type:
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Article
Article - Published version |
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Published by:
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American Physical Society
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